What one says when eating something very good, or when eating quickly.

Onomatopoeia for Cookie Monster's war cry when invading the cookie jar.

A vague reference to oral sex, especially on a female.

Person one: Hey, have you tried these new cookies? They have fudge, caramel, and nuts on the inside, outside, AND in the chocolate chips themselves! Here, I brought some for
Person Two: *OMNOMNOMNOMNOMNOMNOM*

Om Nom Nom-(v.) The action of narfing something down as an act of extreme hunger.
2. A sound a kitty makes while is sips milk from a bowl formally labeled "milk".
3. A sound a mouse makes while it nibbles the cheddar found in the corner.